Lister attachment.



V. LAUER.

LISTER ATTACHMENT.

APPLICATION FILED MAYlo. 1913.

1,084,1 53. Patented 1311.13, 1914.

ATTO R N EY lNVENTOR UinTED sTATEs PATENT oEEioE.

VICTOR LAUER, OF STILLWATER, OKLAHOMA.

LISTER ATTACHMENT.

. 10 all 'whom it may concern.'

lic it lniown that l. Vieron LAUER, a citizen of the United States, residing at Stillvater, in thc county of Payne and State of Oklahoma, have invented a new and useful Lister rittaclunent, of which the following is a specification.

The invention relates to improvements in lister plows.

The object of the present invention is to provide for lister plows a simple, inexpensive and eflicient attachment adapted to be readily applied to lister plows, and capable of forming a shield to prevent the central portion of the share or blade from wearing thin and splitting through before the said share or blade has worn out at the point and side edges.

lith these and other objects in view, the invention consists in thel construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claims hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction, within the scope of the claims, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawing :HF igure l is a front elevation of a lister plow provided with an attachment, constructed in accordance with this invention. Fig. 2 is an enlarged central longitudinal sectional view of the share or blade and the shield. Fig. 3 is a transverse sectional view on the line 3*?) of Fig. 2. Fig. 4 is a plan view of the share or blade and the shield.

Like numerals of reference designate corresponding parts in all the figures of the drawing.

In the accompanying` drawing in which is illustrated the preferred embodiment of the invention, 1 designates a shield. constructed of suitable metal and extending longitudinally of the share or blade 2 in spaced relation with the front end and side edges thereof, and projecting upwardly beyond the share or blade l and overlapping the ridge 3 formed by the moldboards or wings 4l of a lister plow. The sha-rc or blade 2, which constitutes the plow point, is of the usual construction, and in rear of the front end or point 5 has its side portions arranged at an angle to each other, as clearly illustrated in Specification of Letters Patent.

Application filed May 10, 1913.

Patented Jan. 13,1914. sei-iai No. 766.792.

Fig. 3 of the drawing. The central portion G of thc share or blade is arched or curved transversely, and the shield is similarly curved and fits the exterior of this raised or arched central portion and extends longitudinally thereof, its lower end 7 being tapered and extending approximately to the point where the rise in the central portion of the share or blade begins. The inner or lower face of the shield is concave, and its outer face is convex or rounded transversely, and the side edges S of the shield are tapered or beveled so as to merge substantially into the outer faces of the side portions of the share or blade l.

The longitudinal shield is secured at its center to the share or blade l preferably by a single central bolt 9, piercing the blade or share l and having its head countersunk in the inner face thereof so as not to interfere with the attaclunent of the said blade or share to the foot or frog of a. standard 10, or other supporting portion of the plow. The upper or outer end of the bolt is threaded for the reception of a nut ll, whichis arranged exteriorly of the shield, but the latter may be secured to the blade or share in any other preferred manner. The transverse curving or arching of the shield and the fitting of the same against the central transversely curved or arched portion of the blade or share interlock the shield with the said blade or share so that a single bolt is all that is required to retain the shield in position.

The upper or inner transverse edge l2 of the blade or share fits against the lower transverse edges 13 of the moldboards or wings l in the usual manner, and the upper end portion 14 of the shield is tapered ina manner similar to the lower end 7, the point 15 at the upper end of the shield beingV arranged in thc plane of the ridge 3, as clearly illustrated in Fig. l of the drawing. The shield is arranged to receive the wear, which would otherwise occur at the central portion of the blade or share l, and owing to the particular construction and arrangement of the fastening means, it may, when worn, be readily removed and replaced by a new shield. By relieving the central portion of the share or blade of such wear, it is effcctually prevented from wearing thin at such portion and breaking before the point and side edges have become worn.

that is claimed is l. The combination with a lister share or blade, of al central longitudinal shield secured to the share or blade and extending upwardly along the upper central portion of the same from a point above and in rear of the front edge of the said share o-r blade and adapted to prevent the said central portion of the share or blade from being worn thin and breaking before the point and side edges of the share have worn out.

2. ln combination with a lister blade or share, a longitudinal shield extending along the upper central portion of the said share or blade from a point in rear of the front end of the same and extendingupwardly or rearwardly beyond the inner or rear transverse edge of the said share and adapted to project over and overlap the ridge formed by the moldboards or wings of the lister plow.

3. In combination with a lister share or blade, a central longitudinal shield secured to the blade or share and curved transversely to tit the central portion thereof1 and having a lower or front tapered end located in rear of the front end of the share or blade and substantially merging into the faces of the side portions thereof.

4. In combination with a lister blade or share, a central longitudinal shield curved transversely to tit the Central portion of the said blade or share and extending upwardly beyond the inner edge thereof and having a tapered upper portion adapted to overlap the ridge formed by t-he moldboards of the lister plow and fit against the latter.

ln combination with a lister blade or share7 a central longitudinal shield having a lower or inner concave face fitting the central portion of the blade or share, and a fastening device piercing the share or blade and the shield, said shield being spaced from the front end and side edges of the share.

6. ln combination with a lister blade or share, a central longitudinal shield having an inner or lower concave face to tit the central portion of the said share or blade and provided with tapered upper and lower portions, the tapered lower portion being arrangedy in spaced relation with the front end and side edges of the blade and the tapered upper port-ion extending beyond the said share or blade and adapted to fit the moldboards or wings of a lister plow at the ridge thereof.

ln testimony, that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

i VICTOR LAUER.

Vitnesses J. lV. JONES, E. L. WoCoY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, D. C. 

